Marine HX-3000 Medium and High Frequency (MFHF) Radio Equipment MFHFDSC

Product Description

Main Applications

This equipment is mainly used for MFHF communication on ships in A2~A4 sea areas, with the following main functions:
1) SSB voice communication
2) GMDSS functions
a) "One-touch" maritime rescue and distress alerting
b) Six-channel standard GMDSS distress channel monitoring
c) Alert information forwarding

Technical Specifications

Electrical Performance Indicators of Transmitting Section
Frequency range: 1.6MHz~30MHz (transmitting); 0.5MHz~30MHz (receiving)
Frequency error: No more than ±10Hz.
Rated output power (PEP): 150W/100W/50W;
Intermodulation distortion: -25dBc.
SSB voice automatic level control (AGC)
When the input impedance is 600 ohms: Line input: -20~10dBm; Local input: ≤20mV, output variation no more than ±1.5dB.
SSB voice frequency response: 300~3000Hz, 3dBc
Carrier suppression: J3E: >40dB; H3E: 4.5~6dB.
Continuous telephone operation
The radio transmitter can work continuously for 15 minutes at rated power, and the output power varies by no more than ±1.5dB relative to the rated power.

Electrical Performance Indicators of Receiving Section
Frequency audio output amplitude
Headphone: ≥1mW;
Speaker: ≥2W;
600 ohm linear output: 0±10dB.
Frequency error: After the warm-up period ends, the frequency error is no more than ±10Hz.
Audio response: 300~3000Hz, audio variation less than 3dB.
Sensitivity
J3E: -102dBm (1.8uV) when SINAD=20dB;
F1B: -112dBm (0.58uV) when BER≤10?2.
Total distortion factor: ≤3%.
Blocking
1. J3E:
1) When the useful signal is +60dBuV, the blocking signal > +100dBuV;
2) When the useful signal is at the sensitivity level, the blocking signal is at least 65dB higher than the sensitivity level.
2. F1B:
1) When the useful signal is +60dBuV, the blocking signal > +100dBuV, and the bit error rate is no less than 10?2;
2) When the useful signal is at sensitivity level +3dB, the blocking signal > +60dBuV, and the bit error rate is no less than 10?2.
Spurious frequency suppression ratio
J3E: >60dB;
F1B: >70dB when BER>10?2.
Relative audio intermodulation: < -25dB.
Conducted spurious emissions
9kHz-2GHz: <2 nW;
2GHz-4GHz: <20nW.